Headphone



FIG. 1 is a top perspective view of a headphone of the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken line showing of headphone is included for the purpose of illustrating environment and forms no part of the claimed design. 

CLAIM We claim the ornamental design for a headphone, as shown and described. 